Big Tech, also referred to as the Tech Giants or Tech Titans,[1] is a collective term for the largest and most influential technology companies in the world.[2] The label draws a parallel to similar classifications in other industries, such as "Big Oil" or "Big Tobacco".[3] In the United States, it commonly denotes the five dominant firms—Alphabet, Amazon, Apple, Meta, and Microsoft—often called the "Big Five".[4][5][6] An expanded grouping, sometimes termed the "Magnificent Seven", includes Nvidia and Tesla, which each have a market capitalization larger than Meta. The concept of Big Tech can also extend to the major Chinese technology firms—Baidu, Alibaba, Tencent, and Xiaomi—collectively referred to as BATX.